Some factors that may affect the image upload process:

1. FASO is programmed to only upload .jpg (.jpeg) images in RGB mode (sRGB mode for Photoshop users) at 72 dpi resolution. 

The first thing to check is the file extension to make sure you have jpg images. The file extension is the period followed by 3-4 letters after the filename. It will look like this 'filename.jpg' or 'filename.jpeg.' If the extension is anything else (such as .tif, .tiff, .bmp, .gif, .pcx, .psd, .heic) you will have to open the image in your image editing software and save it as a jpg. 

iPhone users please see:
iPhone HEIC Images Causing Image Uploading Issues

2. Another possibility depends upon your internet connection. 

• Broadband DSL and Cable modem connections should not be a problem. 
  
  
• Dial Up Modems 
  
  Dial up connections can interfere because the rate the connection transfers data is much slower. It is not impossible to upload images over a dial-up connection however, be prepared for it to take a while. How long will it take? It mainly depends upon the connection speed. Dial up modems are rated at 56k, which means in a perfect world it can transfer 5.6 kilobytes of data per second. 
  
  If you are trying to download an image that is 1 megabyte (which is 1000 kilobytes) divide 1000 by 5.6, which equals the number of seconds it will take to download. Divide the number of seconds by 60 and you will get the number of minutes it will take. Roughly a 1mb image will take about three minutes. 
  
  This scenario is figuring ideal connection speeds, which rarely exist in the real world. Depending on which internet service provider you use, most of the time the dial up connections will actually connect somewhere between 24-36k sometimes more, sometimes less.
  Something else to keep in mind is the upload rate is usually slower than the download rate. To spare you any more details the smaller the connection number the longer it is going to take.

To decrease the potential problems in uploading your images you can decrease your file size.

The FASO image upload component processes 9 different sized web images for every image you upload. 

If you open your image in your editing software you should be able to change your units of measure to pixels. Some software will display the pixel dimensions as well as the print dimensions. Don't worry about the print dimensions. Change your largest dimension to 800 pixels and save your changes to a new file. 

Whenever you reduce a digital image, it may lose a little sharpness so you may want to apply a sharpen or unsharp mask filter before saving the file. Saving as a jpeg will give you the option to apply compression to the image, which will also make the file size smaller (please note I said file size not image size). 

Some people get alarmed by the fact they are compressing their images, which potentially alters the image quality. If you have a nice image to begin with you can set the compression or quality level at 6-8, which significantly reduces the size of the file but has little or no visual effect on the appearance of the image.